Thomas harold



(No Model.)

T. HAROLD. ADJUSTABLE PANEL MITER BOX.

No) 534,647. Patented Peb. 26, 18.95.

UNITED STATES A PATENT EETCE.

THOMAS HAROLD, OF VANCOUVER, OANADA,IASSIGNOR OF ONE-HALF T O JOHNMCCOLL, OF SAME PLACE.

ADJUSTABLE PANEL lVlITER-BOX.

SPECIFICATION forming part of Letters Patent No. 534,647, dated February26, 1895.

Application filed March Z2, 1894.

To all whom, zit may concern:

Be it known that l, THOMAS HAROLD, a British subject, residing at thecity of Vancouver, in the Province of British Columbia, Canada, haveinvented a new and useful Adjustable Panel Miter-Box, of whichthe'following is a specification.

This invention relates to adjustable miter boxes; and it has for itsobject to effect certain improvements in miter boxes of thatcharacter,especially adapted for making bevels for panel work.

To this end the main and primary object of the invention is to provide anew and useful miter box that shall be simple, light, and durable, whileat the same time being so con- Y structed as to make provision for aright and left hand cut of the wood with but a single adjustment of thebox, andalso to be so arranged as to be adapted for being directlyapplied to the panel to be itted, and thereby dispensing with the use ofthe ordinary bevel for finding the angle to be fitted, and to whichangle the miter box is to be adjusted.

The invention also contemplates a construction of miter box inconnection with which any kind of straight saw can be used.

With these and other objects in View, which will readily appear as thenature of the invention is better understood, the same consists in thenovel construction, combination, and arrangement of parts hereinaftermore fully described, illustrated, and claimed.

In the drawings-Figure 1 is a plan View of an adjustable miter boxconstructed in accordance with this invention. Fig. 2 is a centrallongitudinal sectional view of the same. Fig. 3 is a side elevation ofone of the adjustable side plates of the box. sectional view on the liney-y of Fig. 3; Fig. 5 is a detail sectional view on the line z-z of Fig.l.

Referring to the accompanying drawings, l designates an elongatedmetallic base plate provided with the separate longitudinally disposedslots 2 and 3, respectively, the slot 2,

extending for a greater portion of the length of said base plate out' toone end thereof, and the shorter slot 3 being disposed at the end of theplate 1, opposite to the end to which the slot 2 extends. The said baseplate 1 -is Fig. 4 is a detail Serial No. 504,747. (No model.)

further provided at one side of its center with the offstanding sidequadrant extensions 4, over which Work the separate adjustable sideplates 5 of the miter box. The side plates 5, areprovided with thebifurcated ends (j, that loosely embrace the side quadrant extensions 4,of the base plate 1, and the bifurcated extremities of the saidadjustable side plates 5, are pivotally secured together and to the baseplate l, between the slots 2 and 3, by the single pivot pin 7, thatallows for the simultaneous adjustment of said side plates 5. The

said side plates 5 have a circular adjustment over the quadrants 4, atopposite sides of the base plate 1, and the said side plates are furtherprovided at one side edge with the upwardly disposed side rest anges 8,against which the molding or material to be cut rests when placed in themiter box for being operated-upon by thesaw, andthe said adjustable sideplates 5 are adapted to have placed on top of the same against the sideflanges 8, thereof', the wooden facing strips 9, that serve to protectthe saw by preventing the same from coming in contact with the metalside plates, as will be readily understood. The side plates 5, arefurther provided at their inner side edges intermediate of their endswith the offstanding pivot lugs 10, to which are pivotally connected theinner ends of the opposite curved connecting links 11, the other outerends of which are pivotally connected to the thumb adjusting screw 12,mounted to slidev in the long slot 2 in the baseplate 1, and adapted toclamp the connected ends of the links 11, tight onto the base plate 1,in any adjusted position. So in order to adjust the side plates 5 of themiter box to and away from the base plate 1, it is simply necessary toloosen the thumb screw 12, and to adjust the same longitudinally withinthe slot 2, until the desired adjustment of the side plates 5 issecured, and then the said thumb screw is tightened.

By reason of the fact that one end of the side plates 5, is bifurcatedas at 6, a portion of the plates work both above and also below the sidequadrant extensions 4, of the base plate 1, and it will be readilyunderstood that the portions of the side plates 5, that work below thequadrant extensions 4, can be fitted ICO directly to the panel for whichthe bevels are to be cut, and by adjusting the side plates 5, so thatthe portions thereof below the quadrant extensions 4, will fit in theangle of the panel, the proper adjustment of said side arms may besecured without the use of the ordinary bevel, as is now commonly used,and after having been adj usted to the proper angle the molding orstrips to be mitered or beveled are first placed on one side plate andthen upon the other in the usual way for the mitering saw to operatethereupon, and to provide means for limiting the adjustment of the sideplates 5, for the purpose of making a square cut on the molding or othermaterial to be sawed, the side quadrant extensions 4, are provided attheir outer angles with the upwardly disposed stop flanges or lugs 13,against which the flanged sides are adapted to engage when adjusted atdirect right angles to the length of the base-plate 1.

The slots 2 and 3 respectively at opposite sides of the single pivot pin7, are adapted to have adjustably mounted therein the tubular socketcastings 14. The tubular castings 14, are adapted to be engaged at theirunder sides by the headed adjusting screws 15, working in the slots ofthe base plate and adapted to bind against the said base plate at thelower edges of the slot, to provide for holding the tubular socketcastings in any adj usted position. The tubular socket castings 14, thatare mounted forlongitudinal adjustment at different points on the baseplate 1, in the manner described, are provided at diametrically oppositesides with the screw slots 16, through which are adapted to pass thesecuring screws 17, engaging in the duplicate semi-cylindrical saw guideblocks 18, that are fitted into the socket castings 14, and are adaptedto accommodate the mitering saw for movement therebetween, it of coursebeing understood that the saw slot or space between the blocks 18 ofeach saw guide are in longitudinal alignment with each other to providefor properly receiving the saw. The said socket castings 14 are alsoprovided in their opposite sides at diametrically opposite points withthe saw slots 19, communicating with or openinginto the slots betweenthe semi-cylindrical saw ity of a cushion for the saw topreventinjury tothe teeth thereof.

From the above it is thought that the construction, operation and manyadvantages of the herein described adjustable miter box will be readilyunderstood by those skilled in the art.

Having thus described the invention, what is claimed, and desired to besecured by Letters Patent, is-

1. In an adjustable miter box, an elongated base plate provided withseparate long and short slots, and at one side of its center withopposite integral offstanding side quadrant extensions having upwardlydisposed stop lugs or flanges 13 at their outer angles, a pair ofcircularly adjustable side plates provided with bifurcated ends looselyembracing and working over both sides of said quadrant extensions, theportions of said side plates that work at one side of' the quadrantextensions being adapted to be fitted directly to the work for which thebevels are to be cut, the extremities of said bifurcated ends beingpivotally joined to the base plate between the slots thereof, said sideplates being further provided at one side edge with upwardly disposedrest flanges, wooden facing strips fitted on top of said side plates, athumb screwmounted in the long slot of said base plate, connecting linksconnected at one end to said thumb screw and pivotally at their otherends to the said side plates intermediate of their ends, and separatealigned saw guides mounted for adjustment in the slots of said baseplate, substantially as set forth.

2. In a miter box, the combination with a base plate having separatelongitudinal slots and circularly adjustable side plates mounted on saidbase plate; of socket castings mounted for longitudinal adj ustment onsaid base plate over the slots thereof and provided with separate pairsof diametrically opposite screw slots and saw slots, adjusting screwsworking through the slots of the base plate and connected to the saidsocket castings, duplicate semi-cylindrical saw guide blocks fitted insaid socket castings, securing screws passed through the screw slots ofthe castings and engaging said blocks, and cushion washers fitted in thebottom of said socket castings below said blocks, substantially as setforth.

THOMAS HAROLD.

Witnesses:

J AcoB HURLIMANN, RUSSELL H. Poot..

IClO

